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headlight issue

  #1  
Old 05-24-2016, 07:25 PM
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Default headlight issue

OK so uI noticed that when I use my keyless entry my headlights don't flash, now if I try to manually turn them on I Get nothing, they don't automatically turn on either, my high beams will come on but they won't stay on, I'm thinking this is another multifunction switch smh, I already changed this twice, what u guys think
 
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Old 05-24-2016, 11:52 PM
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I got the car afterwards and hit my lockand they lit up
 
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Old 05-25-2016, 10:05 PM
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Which lock?
Door or ignition?

What brand was the MFS you replaced with? I've heard of a lot of premature failures with aftermarket ones.

Could be a DRL issue. Have you checked the DRL fuse in the engine compartment?
Put the parking brake on and off a few times to see if that makes a difference (see headlamp circuit description in thumbnail below).

Here's the DRL circuit description, headlamp circuit description, headlamp circuit schematic, and headlamp troubleshooting guide from the factory manual.
 
Attached Thumbnails headlight issue-headlampsdrl-circuit-description.jpg   headlight issue-headlamp-troubleshooting.jpg   headlight issue-headlamp-circuit-desription-2.jpg   headlight issue-headlights-control.jpg  

Last edited by plumbob; 05-26-2016 at 08:19 AM.
  #4  
Old 05-25-2016, 11:23 PM
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If it turns out to be the MFS, since I don't believe those require a core return, I'd crack an old one open and see what might be going on inside.

In the '99-'05 Grand Am world, I had an issue on my '04 of the flasher module making a random click (like I activated the turn signal, except I never did). I was getting ready to replace the MFS on that car, then I found a free fix. The issue was caused by old/dirty die-electric grease building up. Over years of the switch being used, the grease was dirty and globbed in areas. Thanks to the dirt, it would make a very weak connection on the traces used to activate the turn signal, end result a brief click noise.
Answer, rip apart, clean everything and re-apply a tiny amount of die-electric grease. All fixed.

Maybe something similar is happening in your case.
 
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Old 05-27-2016, 03:39 PM
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like i opened the car via keyless entry, i dont know what brand it was but it was 35 bucks brand new, i know the gm ones go for 300 i heard and i do not got the money for that, it seems like i have changing them like twice a year, but lately its been fine, im keeping an eye on it
 
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Old 05-27-2016, 05:26 PM
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George.
If your talking about the keyless entry fob you're shopping at the wrong place for OEM original ones. I've bought a few on eBay.

Here's the one for your car under $20: New Original GM 10443537 Remote Keyless Entry Key Fob Free Programming Included | eBay

I've never heard of a fob causing headlight problems though.
 
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Old 06-19-2016, 05:24 PM
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OK so on my way back from it nationals yesterday I had no head lights, lucky I made it back before it got dark, I'm thinking it was the multifunction switch but this about to be my 3rd time replacing this....This is annoying, I'm thinking unplugging it and re plugging it, it's only about a year old they shouldn't be going like this
 
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Old 06-19-2016, 06:54 PM
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If you are replacing MFS, than can you tell me how the steering wheel is taken apart?
My horn doesn't work and I think the problem is in the steering wheel.
Thanks, for any info
 
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Old 06-20-2016, 06:56 AM
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Originally Posted by shawn parker View Post
If you are replacing MFS, than can you tell me how the steering wheel is taken apart?
My horn doesn't work and I think the problem is in the steering wheel.
Thanks, for any info
If you have a 6th gen you don't need to take the wheel apart, but almost everything around it, I'm gonna start making sure I still have all the tools and I'll make a video on how to do this

Also make sure the fuse for the horn is still good, that was an issue I had when I first got my car
 

Last edited by owens91; 06-20-2016 at 06:59 AM.
  #10  
Old 06-20-2016, 08:11 AM
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I would be curious if you can dis-assemble a bad/failed MFS and find what is going bad in them (and if it can be fixed).

But sadly, the MFS is my first guess.
 

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